Genesis 23:19

And Abraham hearkened unto Ephron; and Abraham weighed to Ephron the silver, which he had named in the audience of the sons of Heth, four hundred shekels of silver, current money with the merchant.

And the field of Ephron which was in Machpelah, which was before Mamre, the field, and the cave which was therein, and all the trees that were in the field, that were in all the borders round about, were made sure

Unto Abraham for a possession in the presence of the children of Heth, before all that went in at the gate of his city.

And the field, and the cave that is therein, were made sure unto Abraham for a possession of a buryingplace by the sons of Heth.